Type-writing-machine key and type-bar operating mechanism.



J. ALEXANDER.

TYPE WRITING MACHINE KEY AND TYPE BAR OPERATING MECHANISM. APPLIOATION TILED APR. 1-1, 1013 xmnswnn MAR. 20, 1014.

1,105,548. Patented July 28, 1914.

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Z AND TYPE DMZ OPEIIA'JIIHG MECHANISM.

TYPE WRITING MACHINE KB AIPLIGATIOH FILED .Q'PR. l4, 1913 RENEWED 131111.150, 19M. 5 1? pkz ih v labanbnd July 28 1914;

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JEFSSE ALEXANDER,

NXOHOLEu, 01F NEW YOBK. ZN. 1, WWI YUM OF NEW YORK, N. Y., ASSIGNOB F ONE-HALF T0 CBABLES B. AND ONE-HALF TU OSCAR EBELING, 0F BROOKLYN,

TYPE TING-MACHINE KEY AND TYPE-BAR OPERATING MECHANISM.

To all whom it may concern Be it known that 1, Jesse ALEXANDER, a citizen of the United States of America, and residin at New York, in the county of Kings and'ltate of New York, have invented new and useful Improvements in Type- Writing-Machine :Key and Type-Bar Operating Mechanism, of which the following is l a s ecification.

.sponding type bar so y invention relates particularly to front. stroke visible writing machines.

The object of the invention is to rovide a durable and easily operated mecianism with a light starting touch and yet capable of heavy manifolding or other heavy .work. The invention consists in a construction the principles of which are illustrated in the accompanying two she ts of drawings. The key lever is so mounted and connected with the universal bar and intermediate lever that the key lever may be readily removed and withdrawn from the front of the machine. the arc of a circle being carried by a vertical type bar plate. The key levers may be or ran ed in banks as is common in this art. Eac key lever is connected to its correthat a light starting touch is provided and a more powerful printing or completing stroke is ell'ected when the stroke of the kemver is followed through. Each type bar has a number of teeth arranged around if a pivot in the form of a gear segment and a tootned disk or gear segment is pivotally mounted adjacent the type bar teeth'to engage the same. A twoarmed intermediate lever has its horizontal forwardly extending arm connected with a key lever and its vertical arm connected to a link. This link has sliding engagement with a downwardly projecting lug on the type bar and has a pin and slot connection with the toothed disk which engages the type bar teeth.

Figure 1, is a vertical longitudinal section of a machine showing a single unit of a key and type bar action in the normal posit on .of rest. Fig. is a detail perspective view of one of the intermediate levers. Fig. 3, is a detail ierspective view of one of the connecting links. F lg. t, is a detail perspective view of one of the toothed disks. Fig. 5, is a detail perspective view of one Specification tit-Letters Patent.

The type bars are arranged in .clockwisc.

Patented July 28, 1914.

9, 1911. This application filed April 14, 1914. Serial No. 825,991.

Fig. 6, is a vertical crosssectional view similar to Fig. 1 butthe action in the printing position. q-

The key levers such as 1 are all pivotally mounted on a rod 2 at the rear of the machine. The rear end of the key lever is forked at 3 so as to have a yieldin attachable connection with the pivot ro 2. The type bar 4 is pivoted at 5 in the type bar plate (5 so as to strike against the front of the platen 7 in printing. This platen is mounted in a suitable carriage adapted to traverse the machine from side to side. The intermediate lever 8 is connected to the link 9 at its up r end and the link 9 is connected to tie toothed disk 10. The parts are held in the position shown by means of a tension spring 11, the type bar resting in a bracket 12. The forward arm of the intermediate lever is forked as at 13 to have a sliding engagement with the pin 14 carried by the key lever 1. The adjusting screw 15 operating in a stationary bar 16 is adapted to adjust the tension of the spring ll. The upward arm of the intermediate lever has a in 17 affording a pivot in the hole 18 of tie link 9. The rear end of the link 9 has a slot 19 for the pin toothed disk 10. The type bar 4 has a down wardly projecting lug or shoulder 21 engaged by the front end or tip 22 of the link 9. The intermediate levers are all mounted on a pivot rod 23. The toothed disks such as 10 are pivoted as at 24 and each has a series of teeth such as 25 engaging the.

teeth 26 of the corres riding type bar.

When the front em of a key lever is depressed it rocks the intermediate lever about its pivot and carries the upper end of its vertical arm forward. The link 9 having a sliding;' connection at its rear with the pin 20 of the disk 10 is thus guided in a substantially straight line forward movement and the tip 22 engaging the shoulder 21 impcls the type bar upward. As the type bar starts to move upward by the momentum given it by the link 9, the teeth 26 meshing with the teeth cause the disk 10 to rointo in a left-handed direction that is, anti- If the stroke of the key lever is suilicicntly quick and powerful the type bar will be driven to the printing position by the first action of the front end 22 of 20 on the.

the link 9 against teeth 250,116. 26 for exerting extra heavy At the same time link 9 and the toothed disk 10 and type bar are pressure on the platen (see; Fig. 6). When the key lever 1 is released, the spring 11 gulls back the iatelever 8 and thus lifts the key lever. is moved rearwardly swung accordingly. The rebound of the connection between the teet type bar fi'omthe platen also tends to throw the type bar bnck into the normal position of rest and also to return the intermediate lever and the key lever by reason of the I h 26 and I For the purpose of ink writing the ribbon 30 is PIOVlClBd and one of the spools 31 for carrying the ribbon as'shown. Adjacent the printing point the ribbon is guided by a slide 32, the lower end of which is connected to hit esch key lever so that when any key the lever 33 which is pivoted at 34:. The rear end of the lever 33 1s pivoted to an arm 3-5 which carries the universal bar 36 at the lower end. This universal bar 36 extends heroes the machine beneath the finger 37 of lever is depressed the universal bar 36 is epressed end-the ribbon guide 32 moved to the posh tionshown in Fig. 6, so as to interpose the ribbon in front of the type.

It will be obvious that the invention is not limited to the exact proportions, form and arrangement herein illustrated and that the claims are not intended to be limited by the particular terms employed except so far as required by the prior art.

This application is a continuation of 664,759, filed December 9, 1911.

What I claim is 2- 1.111 a key and type bar mechanism, a pivoted key lever, a pivoted type bar having n projecting shoulder and a series of teeth, a diskjhsving teeth meshing with the teeth, of said type bar, a link. connected to said disk "and having one end adapted to cooperate with said shoulder on said typebar and an intermediate lever connecting said link and said key lever.

2. In a key and type bar mechanism, a pivoted key lever, s pivoted intermediate lever connected thereto, a pivoted type bar having gear teeth and a projecting shoulder, a toothed disk meshing with the gear teeth on said typeloar and a link connected to so id intermediate lever, adapted to engage the shoulder of said type bar and having lost mot-ion connection with said toothed disk.

vertical ,arm of the lDl3FII18-' mosses 3. In a key and type bar mechanism, a

' pivoted type bar having a downwardly rogecting shoulder and a series of gear teet 1, a toothed disk meshing with said gear teeth, a member connected to said toothed disk and adopted to engage said shoulder and a key lever connected to operate said member. V 5. In a. key and type bar mechanism, a pivoted type bar iisvinga downwardly projecting shoulder and a. series of gear teeth, a toothed disk meshing with sold gear teeth, a mcmbenhsving a lost motion connection with said toothed disk and adapted to engage said shoulder said member.

6. lo a key and type -bar mechanism a pivoted type her having a shoulder, a disk connected to said type bar, a link connected to said disk and having one end adapted to cooperate with said shoulder, an intermediate lever connected to said link, a spring holding said lever under tension and a key lever connected to said intermediate lever.

7. In s. key and type her mechanism, a pivoted t c disk mes 'lng therewit an intermediate lever having a, vertical arm, a link pivoted to said arm and connected to said disk b a pin and slot and having one end adapts to move said type bar at the beginning of the stroke and e key lever connected to said intermediate lever.- Y

8. in a key and type bar mechanism, e pivoted type bar having gear teeth and a shoulder, a disk having teeth meshing with the type her teeth throughout. the entire stroke of the type bar, a link connected to and means for operating oer'hsving ear teeth, is toothednos.

said disk and engaging the shoulder of said type bar at the beginning of the stroke rind a key lever for operating said link.

9. In a key and type bar mechanism, a pivoted. type her having gear teeth and a shoulder, s. disk having teeth meshing with the type her teeth throughout: the entire stroke of the type bar, a link connected to said disk and engaging the shoulder of said type bar at the beginning of the stroke, an intermediate lever connected to said link and a key lever for operating said-intermediate lever.

JESSE ALEXANDER. Witnesses:

DAVID M. EDSALL, L. P. REILLY. 

